LOG IN / SIGN UP

St. Mary County ZIP Codes

List of ZIP Codes in St. Mary County

The following table lists ZIP Codes associated with St. Mary County, Louisiana, based on ZIP Code Tabulation Area (ZCTA) data from the U.S. Census Bureau.


S.N. Zip Code Latitude Longitude City Population Density
1 70340 29.66974 -91.1043 Amelia 123 924.8
2 70342 29.69486 -91.23772 Berwick 4,732 244.9
3 70380 29.71944 -91.12634 Morgan City 21,043 104.6
4 70392 29.69847 -91.32164 Patterson 8,158 85.6
5 70514 29.8452 -91.55301 Baldwin 1,757 147.2
6 70522 29.74949 -91.43287 Centerville 429 212.0
7 70523 29.87383 -91.52956 Charenton 444 124.1
8 70538 29.74051 -91.54092 Franklin 12,561 21.1


About St. Mary County ZIP Codes

St. Mary County in Louisiana (LA) is served by approximately 8 ZIP Codes. These codes cover residential neighborhoods, business districts, and rural areas that fall under the county's jurisdiction.

Based on ZIP-level population estimates, the total population covered by these ZIP Codes is around 49,247 people. Population and density values vary from one ZIP Code to another, reflecting the mix of dense urban communities and lower-density suburban or rural zones.

Many of the most significant population centers in St. Mary County are located in cities such as Morgan City, Franklin, Patterson, Berwick, Baldwin. These cities and towns help define the economic and demographic character of the county.

Most ZIP Codes in St. Mary County, Louisiana follow the America/Chicago time zone.

Louisiana Counties ZIP Codes

  1. Acadia County ZIP Codes
  2. Allen County ZIP Codes
  3. Ascension County ZIP Codes
  4. Assumption County ZIP Codes
  5. Avoyelles County ZIP Codes
  6. Beauregard County ZIP Codes
  7. Bienville County ZIP Codes
  8. Bossier County ZIP Codes
  9. Caddo County ZIP Codes
  10. Calcasieu County ZIP Codes
  11. Caldwell County ZIP Codes
  12. Cameron County ZIP Codes
  13. Catahoula County ZIP Codes
  14. Claiborne County ZIP Codes
  15. Concordia County ZIP Codes
  16. De Soto County ZIP Codes
  17. East Baton Rouge County ZIP Codes
  18. East Carroll County ZIP Codes
  19. East Feliciana County ZIP Codes
  20. Evangeline County ZIP Codes
  21. Franklin County ZIP Codes
  22. Grant County ZIP Codes
  23. Iberia County ZIP Codes
  24. Iberville County ZIP Codes
  25. Jackson County ZIP Codes
  26. Jefferson County ZIP Codes
  27. Jefferson Davis County ZIP Codes
  28. Lafayette County ZIP Codes
  29. Lafourche County ZIP Codes
  30. LaSalle County ZIP Codes
  31. Lincoln County ZIP Codes
  32. Livingston County ZIP Codes
  33. Madison County ZIP Codes
  34. Morehouse County ZIP Codes
  35. Natchitoches County ZIP Codes
  36. Orleans County ZIP Codes
  37. Ouachita County ZIP Codes
  38. Plaquemines County ZIP Codes
  39. Pointe Coupee County ZIP Codes
  40. Rapides County ZIP Codes
  41. Red River County ZIP Codes
  42. Richland County ZIP Codes
  43. Sabine County ZIP Codes
  44. St. Bernard County ZIP Codes
  45. St. Charles County ZIP Codes
  46. St. Helena County ZIP Codes
  47. St. James County ZIP Codes
  48. St. John the Baptist County ZIP Codes
  49. St. Landry County ZIP Codes
  50. St. Martin County ZIP Codes
  51. St. Mary County ZIP Codes
  52. St. Tammany County ZIP Codes
  53. Tangipahoa County ZIP Codes
  54. Tensas County ZIP Codes
  55. Terrebonne County ZIP Codes
  56. Union County ZIP Codes
  57. Vermilion County ZIP Codes
  58. Vernon County ZIP Codes
  59. Washington County ZIP Codes
  60. Webster County ZIP Codes
  61. West Baton Rouge County ZIP Codes
  62. West Carroll County ZIP Codes
  63. West Feliciana County ZIP Codes
  64. Winn County ZIP Codes